Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector

doi:10.1140/epjc/s10052-021-09371-7

Utilize este identificador para referenciar este registo: https://hdl.handle.net/1822/76272

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Campo DC	Valor	Idioma
dc.contributor.author	Onofre, A.	por
dc.contributor.author	Castro, Nuno Filipe	por
dc.contributor.author	ATLAS Collaboration	por
dc.date.accessioned	2022-03-01T18:20:43Z	-
dc.date.available	2022-03-01T18:20:43Z	-
dc.date.issued	2021	-
dc.identifier.citation	Aad, G., Abbott, B., Abbott, D. C., Abud, A. A., Abeling, K., Abhayasinghe, D. K., . . . Zwalinski, L. (2021). Measurement of single top-quark production in association with a W boson in the single-lepton channel at √s=8TeV with the ATLAS detector. [Article]. European Physical Journal C, 81(8). doi: 10.1140/epjc/s10052-021-09371-7	por
dc.identifier.issn	1434-6044	-
dc.identifier.uri	https://hdl.handle.net/1822/76272	-
dc.description.abstract	The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at s√=8TeV. The dataset corresponds to an integrated luminosity of 20.2fb−1, and was collected in 2012 by the ATLAS detector at the Large Hadron Collider at CERN. The analysis is performed in the single-lepton channel. Events are selected by requiring one isolated lepton (electron or muon) and at least three jets. A neural network is trained to separate the tW signal from the dominant tt¯ background. The cross-section is extracted from a binned profile maximum-likelihood fit to a two-dimensional discriminant built from the neural-network output and the invariant mass of the hadronically decaying W boson. The measured cross-section is σtW=26±7pb, in good agreement with the Standard Model expectation.	por
dc.description.sponsorship	We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; ANID, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF and DNSRC, Denmark; IN2P3-CNRS and CEA-DRF/IRFU, France; SRNSFG, Georgia; BMBF, HGF and MPG, Germany; GSRT, Greece; RGC and Hong Kong SAR, China; ISF and Benoziyo Center, Israel; INFN, Italy; MEXT and JSPS, Japan; CNRST, Morocco; NWO, Netherlands; RCN, Norway; MNiSW and NCN, Poland; FCT, Portugal; MNE/IFA, Romania; JINR; MESofRussia andNRCKI, Russian Federation; MESTD, Serbia; MSSR, Slovakia; ARRS and MIZS, Slovenia; DST/NRF, South Africa; MICINN, Spain; SRC and Wallenberg Foundation, Sweden; SERI, SNSF and Cantons of Bern and Geneva, Switzerland; MOST, Taiwan; TAEK, Turkey; STFC, United Kingdom; DOEandNSF, USA. In addition, individual groups andmembers have received support fromBCKDF, CANARIE, ComputeCanada, CRC and IVADO, Canada; Beijing Municipal Science & Technology Commission, China; COST, ERC, ERDF, Horizon 2020 and Marie Sklodowska-Curie Actions, European Union; Investissements d'Avenir Labex, Investissements d'Avenir Idex and ANR, France; DFG and AvH Foundation, Germany; Herakleitos, Thales and Aristeia programmes co-financed by EU-ESF and the Greek NSRF, Greece; BSF-NSF and GIF, Israel; La Caixa Banking Foundation, CERCA Programme Generalitat de Catalunya and PROMETEO and GenT Programmes Generalitat Valenciana, Spain; Goran Gustafssons Stiftelse, Sweden; The Royal Society and Leverhulme Trust, United Kingdom. The crucial computing support from all WLCG partners is acknowledged gratefully, in particular from CERN, the ATLAS Tier-1 facilities at TRIUMF (Canada), NDGF (Denmark, Norway, Sweden), CC-IN2P3 (France), KIT/GridKA (Germany), INFN-C	por
dc.language.iso	eng	por
dc.publisher	Springer	por
dc.rights	openAccess	por
dc.title	Measurement of single top-quark production in association with a W boson in the single-lepton channel at s√=8TeV with the ATLAS detector	por
dc.type	article	por
dc.peerreviewed	yes	por
dc.relation.publisherversion	https://link.springer.com/article/10.1140%2Fepjc%2Fs10052-021-09371-7	por
oaire.citationIssue	8	por
oaire.citationVolume	81	por
dc.identifier.eissn	1434-6052	-
dc.identifier.doi	10.1140/epjc/s10052-021-09371-7	por
dc.subject.fos	Ciências Naturais::Ciências Físicas	por
dc.description.publicationversion	info:eu-repo/semantics/publishedVersion	-
dc.subject.wos	Science & Technology	por
sdum.journal	European Physical Journal C	por
oaire.version	VoR	por
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